Reaction of Weak Acid with a Strong Base

• What is the equilibrium constant for the reaction of formic acid with sodium hydroxide?

• HCO2H(aq) + H2O ? H3O+(aq) + HCO2-(aq) Ka=1.8 x 10-4

• H3O+(aq) + OH-(aq) ? 2 H2O(l) 1/Kw = 1 x 1014

• ___________________________________________________

• HCO2H(aq) + OH-(aq) ? H2O(l) + HCO2-(aq)

• Knet= Ka/Kw = 1.8 x 1010

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